US11046265B2 - Vehicle electrical system arrangement for a motor vehicle - Google Patents

Vehicle electrical system arrangement for a motor vehicle Download PDF

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Publication number
US11046265B2
US11046265B2 US15/913,201 US201815913201A US11046265B2 US 11046265 B2 US11046265 B2 US 11046265B2 US 201815913201 A US201815913201 A US 201815913201A US 11046265 B2 US11046265 B2 US 11046265B2
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Prior art keywords
electrical system
vehicle electrical
primary
loads
switching position
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US15/913,201
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US20180257585A1 (en
Inventor
Malte Baumann
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Assigned to DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT reassignment DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BAUMANN, MALTE
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/46—The network being an on-board power network, i.e. within a vehicle for ICE-powered road vehicles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/068—Electronic means for switching from one power supply to another power supply, e.g. to avoid parallel connection

Definitions

  • the present invention relates to a vehicle electrical system arrangement for a motor vehicle and to a method for operating a vehicle electrical system arrangement.
  • Vehicle electrical system arrangements and methods for operating a vehicle electrical system arrangement for motor vehicles are fundamentally known. Particularly given the ever increasing automation of the driving operation of vehicles, it is necessary for the redundancy of the system supply for individual electrical loads to be ensured with ever greater certainty.
  • One option for providing such redundancy in this case is to configure different vehicle electrical systems in the form of a primary vehicle electrical system and n in the form of a secondary vehicle electrical system. If the primary vehicle electrical system fails, this can lead to the secondary vehicle electrical system being able to maintain the operation of safety-relevant electrical loads.
  • each vehicle electrical system in a motor vehicle requires what is known as a backup battery.
  • a backup battery is used to provide support for the fluctuating power consumption by means of a voltage converter apparatus or to equalize voltage variations. If a primary vehicle electrical system and a secondary vehicle electrical system are now provided to configure a redundant vehicle electrical system in the form of a vehicle electrical system arrangement, then a second and additional backup battery also needs to be provided in the case of known redundant embodiments. Besides the necessary space requirement for the second backup battery, the additional weight and the additional costs are a large disadvantageous factor in a configuration of the redundancy of this manner.
  • a vehicle electrical system arrangement having a battery apparatus to which a primary vehicle electrical system and at least one secondary vehicle electrical system are electrically conductively connected, wherein the primary vehicle electrical system has a primary set of loads and the secondary vehicle electrical system has a secondary set of loads, wherein further a backup battery is connected to the primary vehicle electrical system and to the secondary vehicle electrical system via a switching apparatus, and the switching apparatus has at least one primary switching position for an electrically conductive connection to the primary vehicle electrical system and a secondary switching position for an electrically conductive connection to the secondary vehicle electrical system.
  • a vehicle electrical system arrangement for a motor vehicle has a battery apparatus to which a primary vehicle electrical system and at least one secondary vehicle electrical system are electrically conductively connected.
  • the primary vehicle electrical system is equipped with a primary set of loads and the secondary vehicle electrical system with a secondary set of loads.
  • a backup battery is connected to the primary vehicle electrical system and to the secondary vehicle electrical system via a switching apparatus.
  • the switching apparatus has at least one primary switching position for an electrically conductive connection to the primary vehicle electrical system and a secondary switching position for an electrically conductive connection to the secondary vehicle electrical system.
  • a vehicle electrical system arrangement is thus armed at likewise providing a redundancy.
  • two separate vehicle electrical systems in the form of a primary vehicle electrical system and in the form of a secondary vehicle electrical system are provided.
  • the two vehicle electrical systems that is to say the primary vehicle electrical system and the secondary vehicle electrical system, are electrically conductively connected to the battery apparatus.
  • This connection may be provided either directly or indirectly via further electrical operational apparatuses.
  • the electrically conductive connection is provided via the electrical converter for the respective vehicle electrical system, which will be explained in even more detail later.
  • each vehicle electrical system not only for the electrical wiring but also for the applicable connection to a multiplicity of electrical loads.
  • the electrical loads of the primary vehicle electrical system are combined in a primary set of loads.
  • the electrical loads of the secondary vehicle electrical system are together referred to as a secondary set of loads.
  • at least one electrical load is provided for each of the primary set of loads and the secondary set of loads.
  • a core concept according to aspects of the invention is then distinguished in, that a backup battery can be provided as a common backup battery for the primary vehicle electrical system and for the secondary vehicle electrical system.
  • the backup battery can now be provided firstly to support the primary vehicle electrical system and secondly to support the secondary vehicle electrical system.
  • the switching apparatus associated with the backup battery will be in the primary switching position and hence the backup battery will provide electrical support for the primary vehicle electrical system.
  • the switching apparatus can be used to change over to the secondary switching position, so that now electrical support for the secondary vehicle electrical system by means of the backup battery becomes possible.
  • electrically important or safety-relevant electrical loads are preferably connected to the primary vehicle electrical system and hence as part of the primary set of loads. In the event of redundancy demands, connection to the two vehicle electrical systems is possible, in particular.
  • the individual electrical loads are, in particular, functional loads of the vehicle and distinctly not drive motors in an electrical manner for electrically driven vehicles.
  • An electrical load may be a sensor, an actuator or a controller, for example, in order to provide an automated or semi-automated driving functionality for the motor vehicle.
  • the battery apparatus can provide the applicable electrical power in the form of a high-voltage battery.
  • the switching apparatus has a monitoring apparatus for monitoring the operability of the two vehicle electrical systems and for controlling the primary switching position and the secondary switching position.
  • a monitoring apparatus is used particularly to monitor the voltage situation and/or the current flow situation in the two vehicle electrical systems.
  • the control functionality which may be configured as a controller/or regulatory function, can be used to change over the switching apparatus from the primary switching position to the secondary switching position by means of the monitoring apparatus.
  • the backup battery is thus now part of the second vehicle electrical system and is used to provide electrical support for the secondary vehicle electrical system in this special case on in this fault case.
  • the primary vehicle electrical system is electrically conductively connected to the battery apparatus via a primary transformer and the secondary vehicle electrical system is electrically conductively connected to the battery apparatus via a secondary transformer.
  • the converters are electrical converters that are preferably configured as DC/DC converters.
  • the two converters are in this case separate converters for the two systems and are particularly suited to controlling, or controlling and/or regulating, the applicable power decrease.
  • the primary transformer and/or the secondary transformer has a trimming apparatus for trimming the voltage between the primary vehicle electrical system and the secondary vehicle electrical system.
  • a trimming apparatus is thus used particularly likewise for monitoring a functionality of the two vehicle electrical systems, particularly for monitoring the voltage in these two vehicle electrical systems.
  • the trimming apparatus is used to equalize or trim this voltage discrepancy and preferably to keep it below a predefined trimming threshold value.
  • the trimming apparatus may be part of one or both converters, but can also be configured as a separate apparatus.
  • At least one electrical load of the secondary set of loads is configured redundantly in relation to a corresponding electrical load of the primary set of loads.
  • a safety-relevant electrical load may also be provided in a dual and hence redundant manner in the two sets of loads. Therefore, the redundancy is provided not only for the option to connect to the respective vehicle electrical system, but also for the operability of the respective safety-relevant electrical load.
  • the maximum power decrease of the electrical loads of the secondary set of loads is smaller than an associated power transfer of the electrical connection to the battery apparatus.
  • the power transfer of this electrical connection is defined in an electrical manner particularly by the converter that has already been explained.
  • the subject matter of the present invention is likewise a method for operating a vehicle electrical system arrangement according to aspects of the invention, having the following steps:
  • a method according to aspects of the invention can be developed to the effect that the voltage in the primary vehicle electrical system and in the secondary vehicle electrical system is monitored and the two monitored voltages are trimmed. This avoids sudden voltage changes when the switching apparatus is changed over between the primary vehicle electrical system, on the one hand, and the secondary vehicle electrical system, on the other hand.
  • This trimming can be correlated, for example, with a threshold value that predefines or permits a maximum voltage difference between the voltage of the primary vehicle electrical system and the voltage of the secondary vehicle electrical system.
  • FIG. 1 schematically shows an embodiment of a vehicle electrical arrangement according to aspects of the invention
  • FIG. 2 schematically shows the embodiment of FIG. 1 in the secondary switching, position.
  • FIGS. 1 and 2 show a first embodiment of a vehicle electrical system arrangement 10 according to aspects of the invention.
  • a battery apparatus 20 in the form of a high-voltage battery is provided that provides sufficient electrical power for a multiplicity of electrical loads 12 .
  • the individual electrical loads 12 are distributed in an intelligent manner over two different vehicle electrical systems, namely the primary vehicle electrical system 30 and the secondary vehicle electrical system 40 .
  • Safety-relevant electrical loads 12 are assigned particularly to part of the primary set of loads 32 and hence to the primary vehicle electrical system 30 .
  • the primary vehicle electrical system 30 is electrically conductively connected to the battery apparatus 20 via a primary converter 34 and the secondary vehicle electrical system 40 is electrically conductively connected to the battery apparatus 20 via a secondary converter 44 .
  • a backup battery 50 is provided as a backup option for the primary vehicle electrical system 30 via a switching apparatus 60 with a primary switching position PS as shown in FIG. 1 .
  • the backup option is thus provided to the primary vehicle electrical system 30 in an electrical manner by the backup battery 50 .
  • a malfunction e.g. a voltage drop
  • a switching apparatus 60 effects changeover to the secondary switching position SS.
  • the applicable switching position is now shown for the embodiment of FIG. 1 by FIG. 2 .
  • the switching apparatus 60 is in the secondary switching position SS, which means that the electrical backup functionality by means of the backup battery 50 now has an effect on the secondary set of loads 42 and the secondary vehicle electrical system 40 .
  • FIGS. 1 and 2 has provision for a trimming apparatus 70 between the primary converter 34 and the secondary converter 44 .
  • This trimming apparatus 70 is used to reduce the voltage difference between the primary vehicle electrical system 30 and the secondary vehicle electrical system 40 and particularly to keep it below a predefined trimming threshold. In the event of the changeover movement of the switching apparatus 60 , as has already been explained with reference to FIGS. 1 and 2 , this ensures that an undesirably high sudden voltage change is avoided during the changeover between the primary switching position PS and the secondary switching position SS.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
US15/913,201 2017-03-09 2018-03-06 Vehicle electrical system arrangement for a motor vehicle Active 2038-08-20 US11046265B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017104977.0 2017-03-09
DE102017104977.0A DE102017104977A1 (de) 2017-03-09 2017-03-09 Bordnetzanordnung für ein Kraftfahrzeug

Publications (2)

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US20180257585A1 US20180257585A1 (en) 2018-09-13
US11046265B2 true US11046265B2 (en) 2021-06-29

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US (1) US11046265B2 (ja)
JP (1) JP6596526B2 (ja)
CN (1) CN108569232B (ja)
DE (1) DE102017104977A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210028642A1 (en) * 2019-07-22 2021-01-28 Robert Bosch Gmbh Electrical energy storage system and method for operating same

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DE102019101314A1 (de) * 2019-01-18 2020-07-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Vorrichtung und Verfahren zur Nutzung von Komponenten eines Fahrzeugs
JP7287017B2 (ja) * 2019-03-14 2023-06-06 株式会社デンソー 移動体用電源システム
CN110492595A (zh) * 2019-08-01 2019-11-22 神华（福建）能源有限责任公司 一种直流电源自动切换装置及系统
JP7176497B2 (ja) * 2019-10-15 2022-11-22 株式会社デンソー 電源システム

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JP2003244937A (ja) * 2002-02-18 2003-08-29 Yazaki Corp 負荷駆動装置
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DE102012207624A1 (de) 2012-05-08 2013-11-14 Siemens Aktiengesellschaft Moduleinheit, Verbund und Verfahren zum Überwachen eines Energieversorgungsnetzes
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Publication number Priority date Publication date Assignee Title
US20210028642A1 (en) * 2019-07-22 2021-01-28 Robert Bosch Gmbh Electrical energy storage system and method for operating same

Also Published As

Publication number Publication date
JP2018150036A (ja) 2018-09-27
CN108569232A (zh) 2018-09-25
DE102017104977A1 (de) 2018-09-13
JP6596526B2 (ja) 2019-10-23
US20180257585A1 (en) 2018-09-13
CN108569232B (zh) 2021-11-19

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